Since gasoline and oil prices are out-of-control, many people have turned to hydrogen generators for their cars to increase gas mileage and reduce emissions.
mileage

Hydrogen Generators for My Car
U.S. Fuel Economy Standards Boosted to 31.6 MPG by 2015 : Gas 2.0
The White House has outlined their plan to increase fuel efficiency standards to 35 MPG by 2020, a move that will save Americans an estimated $100 billion in fuel costs. The proposal gives a boost to the timeline by requiring the mileage of passenger vehicles to average 31.6 MPG by 2015. That’s up from today’s average of 25 MPG.
A Biodiesel Prius? VW To Release 69.9 MPG Diesel Hybrid
Toyota may lose its high-mileage stranglehold on the U.S. auto industry, thanks to Volkswagon’s new Golf hybrid-electric diesel.

Hydrorunner G3 Increases Gas Mileage at Least 84-Percent
The Hydrorunner G3 hydrogen additive system has been shown to improve gas mileage by over 84-percent and reduce greenhouse emissions by 90-percent.
Is The German Auto Industry Really Getting Greener?
President of the German automotive industry association, Matthias Wissmann, told a news conference recently "We don’t want Germany to became a nation of small car owners".
Germans Release 117 MPG Diesel Sportscar: Biodiesel, Anyone?
The German company Loremo (short for low-resistance mobile) released a turbodiesel sportscar at last September´s Frankfurt International Auto Show capable of a whopping 117 mpg and range of no less than 621 miles. They also plan on hybrid and electric models, and even one that runs on vegetable oil.

Hybrid Hacks can increase MPG now. Electric hybrids still years away.
Driving techniques help, but a few basic modifications to your hybrid could increase MPG by 50% or more...

Honda on Sale with 930,000 Miles!
Honda builds them to last. Original engine and transmission.